Trolley.



No. 891,123. PATENTED JUNE 16, 1908. J. O. WILKINS.

TROLLEY. I

APPLIGATION FILED 0013.27, 1906.

Summon UNITE SAT *j. FTQF.

JOHN G. WILKINS, OF SWISSVALE, PENNSYLVANIA.

TROLLEY.

. of the princi al objects of the same is to provide means for reliably and efliciently holding the trolley wheel engaged with the trolley wire and to prevent accidental displacement therefrom.

Another object of the invention is to provide simple and reliable means for disconnecting the trolley Wheel from the wire by a downward pull upon the trolley rope.

These and other objects may be attained by means of the construction illustrated in the accompanying drawings, in which:

' Figure 1 is a front elevation of a trolley made in accordance with my invention, and showing the trolley axle wheel bearing therefor in section. Fig. 2 is a side elevation of the same. Fig. 3 is a detail plan view looking down upon the trolley.

Referring to the drawing for a more particular description of my invention, the numeral 1 designates the trolley wheel which may be of the usual or any required configuration and provided with the usual circumferential groove 2 to accommodate the trolley wire 3. T he axle 4 of the trolley wheel, is provided with a head 5 and an opposite threaded end 6 fitted with a nut-7. The axle 4 is supported in a pair of bearing plates 8.

The usual harp is shown by dotted line, Fig. 2, and the axle of bolt 4 passes through apertures in the arms 10 of the harp as shown in Fi 1, and on the axle is a bushin 9 for the whee l 1. Supportedon the ends oi the axle 4 and disposed at opposite sides of the harp are bearing plates or members 8. A pair of levers 11 are pivotally connected at 12 to the bearing plates and the upper ends of said levers are elongated and provided with diverging end portions 13, as shown in Fig. 3 to ride easily over the trolley wire supporting devices. The levers 11 are extended downward from the pivotal points 12, and connected to said levers are a pair'oi' operating ropes or cables 14, said cables having their terminal ends 15 secured in apertures in the levers 11 and extended in o 'posite directions through terminal eyes-16 ormed on the ends of the Specification of Letters Patent.

Application filed October 27, 190.6.

Patented June 16, 1908 Serial No. 340,912.

said levers 11. The ropes or cables 14 are united at 17 to a single operating rope or cable 18. Springs 19 extend from studs 20 projecting inward from the levers 11 and from the studs 21 projecting outward from the bearing plate, said springs exerting'their tension'to close the jaws 22 over the trolley wire 3. The studs 20 are adapted to engage the studs 21 so as to limit the movement of the levers as they are released by the pulling of the rope 18. The bearin plates 8 are provided with spaced pintle bearing lugs through which the pivot pins 12 pass and the levers 11 are disposed between the spaced bearings, as shown more particularly in Fig. 2.

The operation of 'm invention may be briefly described as to owe: When the re e 18 is drawn downward, the lower ends of the levers 11 are drawn together and the aws 22 are separated so that the trolley wire 3 will readily be disconnected from the trolley wheels 1. upward by means of its spring, the trolley wire 3 will ride upon the up er. surfaces of jaws and force them apart su ciently to engage the trolley wheel when a downward pull is exerted upon the ,rope 18, and when said rope is released, the jaws 22 approach each ot ier and hold the trolley wire in place. upon the trolley wheel, in an obvious manner.

From the foregoing it will be obvious that a trolley wheel made in accordance with my invention will hold the trolley wire in operative position and'not permit the same to become readily detached therefrom, while by pulling downwardu on the trolley rope, the trolley will beinstant y released from the wire. The resent device for releasably holding the tro ley wheel and wire together is designed more particularly as an attachment for trolley harps alreadyi-n use, it being necessary merely to replace the axle or bolt ordinarily employed by one which-is somewhat longer so that the members 8 of the attachment can be supported on the ends of the axle. It will thus be seen that no change in design of the harp is required to adapt the attachment thereto.

When the trolley wheel is carried Having thus described the invention, what I 'claim is:

The combination of a trolley wheel, an axle therefor, means for supporting the axle, members pivotally mounted on the ends of the axle and supported entirely by the latter, levers pivoted on thc'menibers with their cent lever and supported at their ends by the said studs. 10 In testimony whereof I aflix my signature in presence of two witnesses.

upper extremities normally disposed over I the wheel for retaining the trolley wire on the latter, oppositely disposed studs on the lower ends of the members and levers, the studs on 5 the latter bein arranged to engage those on JOHN C. WILKINS.

the members or limiting the movement of Witnesses: the levers, and helical compression springs T. F. HODGE,

arranged between each member and adja- 1 R031. C. SMITH. 

